#!/usr/bin/node
const EventEmitter=require('events').EventEmitter,
      log=console.log,
      e=new EventEmitter;
setInterval(()=>{
  e.emit('hello');
},1000);
setTimeout(()=>{
  e.emit('hello');
},5000);
e.on('hello',()=>{
  log('hello world');
});
e.on('bye',()=>{
  log('bye');
  process.exit();
});
